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Pneumatic Mini

Discuss miniature cannons built from things such as pill bottles and pen caps.
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Pneumatic Mini

Unread postAuthor: xpitxbullx » Tue Jun 03, 2008 8:31 pm

Built this using an old blowgun.

Chamber = 3/4" PVC
Barrel = 1/2" PVC

Pressure tested to 150 psi. I could use some ammo ideas. :)

Jeff
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pneumatic mini with blowgun release
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Unread postAuthor: magnum9987 » Tue Jun 03, 2008 8:38 pm

Uber airsoft pistol!
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Unread postAuthor: King_TaTer » Tue Jun 03, 2008 8:48 pm

haha thats a nice little toy. Looks pretty good actually, probably packs a decent punch too. AA batteries work good for 1/2" with a bit of tape, you could use wax slugs or steel bearings, or whatever the hell you can think of. Remember you can shoot just about anything with a rag behind it. :wink:

Peace,

Edit: Hah almost forgot about .50 cal paint balls, those work pretty good.
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Unread postAuthor: pizlo » Tue Jun 03, 2008 8:58 pm

Man, your barrel is way to big for the opening of a blowgun, even modded, it cant be more than 1/8 of an inch.
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Unread postAuthor: koolaidman » Tue Jun 03, 2008 9:33 pm

Nice. If i were you id have the chamber angled in the opposite direction and flip over the blow gun. that way it would somewhat resemble a musket.
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Unread postAuthor: OuchProgramme » Tue Jun 03, 2008 9:36 pm

Blowgun isn't going to give you any power when you're comparing the bore and length to the amount of power the tiny blowgun is releasing.

Sprinkler valve next time maybe?
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Unread postAuthor: xpitxbullx » Tue Jun 03, 2008 9:46 pm

I know the larger bore will hinder performance. I'll experiment with smaller barrels, too.

Instead of taking it al the way down to 1/8" I bet I can get a pipe to fit OVER the end and get satisfactory performance from 1/4"

Jeff

EDIT: The 1/2" barrel at 150psi shot a heavy screw and some wadding about 90ft. You have to press the blowgun trigger quick to get decent speed. I believe a lighter projectile like a dart will fly much further. I'll try the 1/4" barrel today and see how it performs.
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Unread postAuthor: psycix » Wed Jun 04, 2008 6:25 am

Nice lil plinker you got there. I suggest using metal pipe as chamber and barrel instead of pvc. Then you can use it on like 300 psi.
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Unread postAuthor: VH_man » Wed Jun 04, 2008 7:11 am

Use it for "UBR" darts.

ive always wanted to have a dartboard game where instead of the darts being thrown, they are shot out of pneumatic pistols........

and im talking shooting REAL throwing darts.
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Unread postAuthor: xpitxbullx » Wed Jun 04, 2008 9:54 am

psycix wrote:Nice lil plinker you got there. I suggest using metal pipe as chamber and barrel instead of pvc. Then you can use it on like 300 psi.


I would have the change my blowgun (rated 90 psi)

I think I saw larger blowguns at the auto store.

Jeff
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Unread postAuthor: psycix » Wed Jun 04, 2008 10:24 am

Most blowguns can bu used over their rating.
The worst that happens is that they probably start to leak at high pressures so its not that bad.
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Unread postAuthor: Maniac » Wed Jun 04, 2008 12:04 pm

Yes that rating is just there so you cant sue them if some thing goes wrong with the blowgun. Blowguns can go very high I think I even recall someone using theirs up to 500 psi, dont quote me on that though. Yes and the worst thing to happen would be leaking, it mould probably take a few thousand psi to actually cause some one harm.
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Unread postAuthor: xpitxbullx » Wed Jun 04, 2008 2:00 pm

My rechargeable air pump can only go up to 200 psi before hitting "the red zone"

Other than that, thats the most powerful air pump I have. I'll give 200psi a try...maybe 225. :) I'm using sched40 PVC/fittings that are rated double what I'm capable of pressurizing it to.

Jeff
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Unread postAuthor: psycix » Thu Jun 05, 2008 5:22 am

Alright! Then nothing is holding you back for that higher pressure :D
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